| 摘要 |
<p>PURPOSE:To avoid the rerun action and then prevent the damage to be given to the system as a whole as well as eliminate the useless machine time, by continuing the information processing work while detecting the range within which the marker gives the malformation to the recording part of the magnetic tape. CONSTITUTION:The magnetic tape 1 wound round the file reel FL is wound round the machine reel ML. In this case, the tape 1 forms the loop 11 at the column 10 and then hangs down to form the tension buffer. Thus a smooth running is secured via the capstan 12. Meanwhile the read 1/writing head 9 reads the necessary information and then carries out the writing. The start end marker BOT3 is stuck at the area of the standard value 3M away from the tip 2 of the tape 1, and the start end part is decided by the start end detecting device consisting of the lamp 15', lens 16' and photosensor 17' each. Also the termination part maker EOT5 is stuck at the area of the >=7.6m standard value away from the rear end 4 of the tape 1. And the termination part is decided by the termination part deciding device consisting of the lamp 15, lens 16 and photosensor 17 each.</p> |
